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Above- and below-ground resource acquisition strategies determine plant species responses to nitrogen enrichment

文献类型：期刊论文

作者Zhang, Dianye2; Peng, Yunfeng; Li, Fei2; Yang, Guibiao2; Wang, Jun2; Yu, Jianchun2; Zhou, Guoying3; Yang, Yuanhe2
刊名ANNALS OF BOTANY
出版日期2021
卷号128期号:1页码:31-44
关键词Nitrogen enrichment light acquisition phosphorus acquisition cluster root root exudation community structure
ISSN号0305-7364
DOI10.1093/aob/mcab032
文献子类Article
英文摘要Background and Aims: Knowledge of plant resource acquisition strategies is crucial for understanding the mechanisms mediating the responses of ecosystems to external nitrogen (N) input. However, few studies have considered the joint effects of above-ground (light) and below-ground (nutrient) resource acquisition strategies in regulating plant species responses to N enrichment. Here, we quantified the effects of light and non-N nutrient acquisition capacities on species relative abundance in the case of extra N input. Methods: Based on an N-manipulation experiment in a Tibetan alpine steppe, we determined the responses of species relative abundances and light and nutrient acquisition capacities to N enrichment for two species with different resource acquisition strategies (the taller Stipa purpurea, which is colonized by arbuscular mycorrhizal fungi, and the shorter Carex stenophylloides, which has cluster roots). Structural equation models were developed to explore the relative effects of light and nutrient acquisition on species relative abundance along the N addition gradient. Key Results: We found that the relative abundance of taller S. purpurea increased with the improved light acquisition along the N addition gradient. In contrast, the shorter C. stenophylloides, with cluster roots, excelled in acquiring phosphorus (P) so as to elevate its leaf P concentration under N enrichment by producing large amounts of carboxylate exudates that mobilized moderately labile and recalcitrant soil P forms. The increased leaf P concentration of C. stenophylloides enhanced its light use efficiency and promoted its relative abundance even in the shade of taller competitors. Conclusions: Our findings highlight that the combined effects of above-ground (light) and below-ground (nutrient) resources rather than light alone (the prevailing perspective) determine the responses of grassland community structure to N enrichment.
学科主题Plant Sciences
出版地OXFORD
电子版国际标准刊号1095-8290
WOS关键词LIGHT INTERCEPTION ; BIODIVERSITY LOSS ; PHOSPHORUS ; SOIL ; DIVERSITY ; GRASSLAND ; RHIZOSPHERE ; COEXISTENCE ; FRACTIONS ; NUTRIENTS
WOS研究方向Science Citation Index Expanded (SCI-EXPANDED)
语种英语
WOS记录号WOS:000734192000005
出版者OXFORD UNIV PRESS
资助机构National Natural Science Foundation of China [31825006, 31988102, 91837312] ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program [2019QZKK0106] ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences [QYZDB-SSW-SMC049]
源URL[http://ir.ibcas.ac.cn/handle/2S10CLM1/26423]  
专题植被与环境变化国家重点实验室
作者单位1.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Tibetan Med Res, Xining 810008, Peoples R China
2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Dianye,Peng, Yunfeng,Li, Fei,et al. Above- and below-ground resource acquisition strategies determine plant species responses to nitrogen enrichment[J]. ANNALS OF BOTANY,2021,128(1):31-44.
APA Zhang, Dianye.,Peng, Yunfeng.,Li, Fei.,Yang, Guibiao.,Wang, Jun.,...&Yang, Yuanhe.(2021).Above- and below-ground resource acquisition strategies determine plant species responses to nitrogen enrichment.ANNALS OF BOTANY,128(1),31-44.
MLA Zhang, Dianye,et al."Above- and below-ground resource acquisition strategies determine plant species responses to nitrogen enrichment".ANNALS OF BOTANY 128.1(2021):31-44.

入库方式： OAI收割

来源：植物研究所

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